TOA A-903MK2 - 8-Channel 30-Watt Mixer Amplifier (Requires Modules)
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TOA A-903MK2 - 8-Channel 30-Watt Mixer Amplifier (Requires Modules)
Sale price$642.00
Regular price$795.00
Description
The TOA 900 Series are widely recognized as the industry standard in installed sound system amplification. When reliability and performance are critical - such as in paging and music distribution for airport, hospital, and industrial sound systems - you can count on the TOA 900 Series to perform consistently, day-in and day-out.
The A-903MK2 (30 W) Modular Mixer/Amplifiers are engineered for high performance with wide frequency response, very low noise and distortion, and excellent output regulation.
Features:- Modular Eight Channel Mixer/Amplifiers for paging, background/foreground music distribution and music/messaging-on-hold.
- Proven TOA Quality and Reliability
- Engineered for High Performance with wide frequency response, very low noise and distortion, and excellent output regulation.
- Three Models: A-903MK2 (30 W), A-906MK2 (60 W), A-912MK2 (120 W)
- Eight Module Slots accept any combination of TOA plug-in modules for custom system configurations.
- 25 V, 70 V and 8 Ohm Transformer-Isolated Speaker Outputs with screw terminal connector and protective cover plate (A-903MK2: 4 ohm).
- Direct Low-Impedance Output Mode bypasses output transformer.
- Dual Mute Bus permits multiple levels of paging priority using optional mute-type modules.
- External Mute Terminals for activating mute function with external switch closure.
- Remote Master Volume Terminals for control with an external 10k ohm linear-taper potentiometer.
| Type | 8-channel mixer power amplifier |
| Power Requirement | AC mains, 120 V, 60 Hz |
| Power Consumption | 60 W |
| Output Power | 30 W RMS |
| Power Band Width | (D) 20 _ 20,000 Hz, 0.5% THD, (T) 50 _ 20,000 Hz, 0.5% THD |
| Frequency Response | (D) 20 _ 20,000 Hz, ±1 dB (T) 20 _ 15,000 Hz, ±1 dB, (T) 20 _ 20,000 Hz, +1 dB, -3 dB |
| T.H.D | 0.02% at 1 kHz, rated output |
| Inputs | Eight Input Ports : Each port accepts any input modules. One Bridging Input/Output |
| Input Sensitivity /Impedance | Input Port #1 to #8 : 100 mV/10 k½ Bridging Input/Output : 100 mV/3.3 k½ |
| Preamp OUT /Power Amp IN | 1000 mV into 600 ½/1000 mV, 10 k½ |
| Outputs(T)=Transformer (D)=Direct | Main (T) : 4 ½, 25 and 70 volts, balanced, Main (D) : 8 ½, unbalanced Aux : 10 k½, 1 V |
| Output Regulation(1kHz) | (D) Less than 0.5 dB, no load to full load (T) Less than 1.0 dB, no load to full load |
| S/N Ratio(Band Pass 20 _ 20,000 Hz) Tone defeat switch on | Master volume min : 90 dB Master volume max : 77 dB Power amplifier only : 105 dB |
| Tone Controls | Bass : ±10 dB at 100 Hz, Treble : ±10 dB at 10 kHz |
| Controls | 8 Input gain control 1 Master gain control 1 Bass control 1 Treble control 1 Power ON/OFF switch 1 Tone defeat switch 1 Low-Cut switch (60 Hz, 6 dB/octave) |
| Indicators | 1 Power LED, 1 Protect LED, 1 Signal LED, 1 Normal LED, 1 Peak LED |
| Protection | Self-protection, with AC fuse (inside) |
| Connectors | Input No.1 to No.8 : Card-edge connector Bridging, Mixer preamp. output, Power amp. input, Aux output : RCA phono jack Output : Screw-terminal strip Mute, Remote VR : Screw-terminal strip AC outlet : 3-pin grounding type AC power cord/plug : SJT, 3-prong type |
| Temperature Range | -10_ _ +60_ (12_F _ 140_F) |
| Finish | Black |
| Dimensions(W_H_D) | 420(16.54") _ 99.1(3.90") _ 318(12.52") mm |
| Weight | 7.8 kg (17.20 lb.) |
| Accessories | Volume control cover (YA-920)ÉÉ4 |
| Option | Rack mouting bracket (MB-25B) |
The TOA 900 Series are widely recognized as the industry standard in installed sound system amplification. When reliability and performance are critical - such as in paging and music distribution for airport, hospital, and industrial sound systems - you can count on the TOA 900 Series to perform consistently, day-in and day-out.
The A-903MK2 (30 W) Modular Mixer/Amplifiers are engineered for high performance with wide frequency response, very low noise and distortion, and excellent output regulation.
Features:- Modular Eight Channel Mixer/Amplifiers for paging, background/foreground music distribution and music/messaging-on-hold.
- Proven TOA Quality and Reliability
- Engineered for High Performance with wide frequency response, very low noise and distortion, and excellent output regulation.
- Three Models: A-903MK2 (30 W), A-906MK2 (60 W), A-912MK2 (120 W)
- Eight Module Slots accept any combination of TOA plug-in modules for custom system configurations.
- 25 V, 70 V and 8 Ohm Transformer-Isolated Speaker Outputs with screw terminal connector and protective cover plate (A-903MK2: 4 ohm).
- Direct Low-Impedance Output Mode bypasses output transformer.
- Dual Mute Bus permits multiple levels of paging priority using optional mute-type modules.
- External Mute Terminals for activating mute function with external switch closure.
- Remote Master Volume Terminals for control with an external 10k ohm linear-taper potentiometer.
| Type | 8-channel mixer power amplifier |
| Power Requirement | AC mains, 120 V, 60 Hz |
| Power Consumption | 60 W |
| Output Power | 30 W RMS |
| Power Band Width | (D) 20 _ 20,000 Hz, 0.5% THD, (T) 50 _ 20,000 Hz, 0.5% THD |
| Frequency Response | (D) 20 _ 20,000 Hz, ±1 dB (T) 20 _ 15,000 Hz, ±1 dB, (T) 20 _ 20,000 Hz, +1 dB, -3 dB |
| T.H.D | 0.02% at 1 kHz, rated output |
| Inputs | Eight Input Ports : Each port accepts any input modules. One Bridging Input/Output |
| Input Sensitivity /Impedance | Input Port #1 to #8 : 100 mV/10 k½ Bridging Input/Output : 100 mV/3.3 k½ |
| Preamp OUT /Power Amp IN | 1000 mV into 600 ½/1000 mV, 10 k½ |
| Outputs(T)=Transformer (D)=Direct | Main (T) : 4 ½, 25 and 70 volts, balanced, Main (D) : 8 ½, unbalanced Aux : 10 k½, 1 V |
| Output Regulation(1kHz) | (D) Less than 0.5 dB, no load to full load (T) Less than 1.0 dB, no load to full load |
| S/N Ratio(Band Pass 20 _ 20,000 Hz) Tone defeat switch on | Master volume min : 90 dB Master volume max : 77 dB Power amplifier only : 105 dB |
| Tone Controls | Bass : ±10 dB at 100 Hz, Treble : ±10 dB at 10 kHz |
| Controls | 8 Input gain control 1 Master gain control 1 Bass control 1 Treble control 1 Power ON/OFF switch 1 Tone defeat switch 1 Low-Cut switch (60 Hz, 6 dB/octave) |
| Indicators | 1 Power LED, 1 Protect LED, 1 Signal LED, 1 Normal LED, 1 Peak LED |
| Protection | Self-protection, with AC fuse (inside) |
| Connectors | Input No.1 to No.8 : Card-edge connector Bridging, Mixer preamp. output, Power amp. input, Aux output : RCA phono jack Output : Screw-terminal strip Mute, Remote VR : Screw-terminal strip AC outlet : 3-pin grounding type AC power cord/plug : SJT, 3-prong type |
| Temperature Range | -10_ _ +60_ (12_F _ 140_F) |
| Finish | Black |
| Dimensions(W_H_D) | 420(16.54") _ 99.1(3.90") _ 318(12.52") mm |
| Weight | 7.8 kg (17.20 lb.) |
| Accessories | Volume control cover (YA-920)ÉÉ4 |
| Option | Rack mouting bracket (MB-25B) |
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